Utilization of Squid Gladius (Doryteuthis opalescens) as a Source of Bioactive Compounds: A Waste to Wealth Approach

Abstract

Chitosan is a linear polymer obtained from chitin through a deacetylation process. Chitosan has several excellent properties including non-toxicity, adsorption, biocompatibility, and biodegradability. Chitosan was synthesized from squid pen waste through demineralization, deproteinization, and deacetylation. The results of the study show that squid pen is composed of the following: protein 5.26 ± 0.25%, lipid 0.32 ± 0.02%, carbohydrate 0.12 ± 0.007%, moisture 8.9 ± 4.10% and ash 0.45 ± 0.21%. The chitosan showed maximum activity against Pseudomonas sp giving 3.31 ± 9.94 mm inhibition zone.